EXPERIENCE IN CORRECTING POST-RADIATION STRICTURE OF THE URETER BY THE VERMIX: A CLINICAL CASE

Relevance: Restoration of ureteral patency in patients with extended defects is one of the most challenging problems in urology. Post-radiation strictures and iatrogenic injuries of the ureter during surgical interventions on the small pelvis and abdominal cavity organs are quite common in urological practice. In cases where it is impossible to restore the ureter with the help of one’s own tissues or the bladder, one of the possible interventions is the use of the appendix due to the similarity in the wall’s structure and peristaltic ability. The article aimed to describe the technique of appendicoureteroplasty (AUP) for post-radiation ureteral strictures. Methods: The article describes a clinical case of a surgical intervention to replace a part of the right ureter in a patient with an extended ureteral defect at the clinic of the National Research Cancer Center (Nur-Sultan, Kazakhstan). Results: The article presents the results of surgical treatment of a patient with extended post-radiation stricture of the ureter using the appendix on the mesentery. The effectiveness of restoring the urodynamics of the upper urinary tract has been shown. Conclusions: The obtained data shows that replacing the ureter with the vermix reduces the risk of hydronephrosis and improves the kidneys’ incretory and excretory functions.